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<h1 id="JMCOH-GUID-FEFBE854-3298-46A6-A149-8B48A62330D2" class="sect1">Using the GC Configuration Page</h1>
<div><p>The <span class="bold">GC Configuration</span> page contains configuration data related to garbage collection.</p>
<p>This page contains panels for <span class="bold">GC Configuration</span>, <span class="bold">Heap Configuration</span>, and <span class="bold">Young Generation Configuration</span>.</p>
<div class="section"><p class="subhead1">Using the GC Configuration Page: GC Configuration Panel</p><ul style="list-style-type: disc;"><li><p><span class="bold">Young Garbage Collector</span>: The garbage collector used for the young generation.</p>
</li>
<li><span class="bold">Old Garbage Collector</span>: The garbage collector used for the old generation.</li>
<li><p><span class="bold">Concurrent GC Threads</span>: The number of concurrent GC threads.</p>
</li>
<li><p><span class="bold">Parallel GC Threads</span>: The number of parallel GC threads.</p>
</li>
<li><p><span class="bold">Concurrent Explicit GC</span>: Indicates whether <code>System.gc()</code> is concurrent or not.</p>
</li>
<li><p><span class="bold">Disabled Explicit GC</span>: Indicates whether <code>System.gc()</code> is will cause a garbage collection or not.</p>
</li>
<li><p><span class="bold">Uses Dynamic GC Threads</span>: Indicates whether a dynamic number of GC threads are used or not.</p>
</li>
<li><p><span class="bold">GC Time Ratio</span>: The GC time ratio. </p>
</li>
</ul>
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<!-- class="section" -->
<div class="section"><p class="subhead1">Using the GC Configuration Page: Heap Configurations Panel</p><ul style="list-style-type: disc;"><li><p><span class="bold">Initial Heap Size</span>: The size of the Java heap at JVM startup.</p>
</li>
<li><p><span class="bold">Minimum Heap Size</span>: The minimum amount of memory reserved for the Java heap.</p>
</li>
<li><p><span class="bold">Maximum Heap Size</span>: The maximum amount of memory reserved for the Java heap.</p>
</li>
<li><p><span class="bold">If Compressed Oops Are Used</span>: Indicates whether compressed Ordinary Object Pointers are enabled.</p>
</li>
<li><p><span class="bold">Compressed Oops Mode</span>: Indicates the kind of compressed Ordinary Object Pointers being used.</p>
</li>
<li><p><span class="bold">Heap Address Size</span>: The heap address size.</p>
</li>
<li><p><span class="bold">Object Alignment</span>: </p>
</li>
</ul>
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<div class="section"><p class="subhead1">Using the GC Configuration Page: Young Generation Configuration Panel</p><ul style="list-style-type: disc;"><li><p><span class="bold">Minimum Young Generation Size</span>: The minimum size of the young generation.</p>
</li>
<li><p><span class="bold">Maximum Young Generation Size</span>: The maximum size of the young generation.</p>
</li>
<li><p><span class="bold">New Ratio</span>: The ratio of the size of the tenured generation to that of the young generation.</p>
</li>
<li><p><span class="bold">Initial Tenuring Threshold</span>: The initial number of times an object survives the young generation before being promoted to the tenured generation.</p>
</li>
<li><p><span class="bold">Maximum Tenuring Threshold</span>: The maximum tenuring threshold for use in adaptive GC sizing. The current largest value is 15.</p>
</li>
<li><p><span class="bold">TLABs Used</span>: Indicates whether Thread Local Allocation Buffers (TLABs) are in use.</p>
</li>
<li><p><span class="bold">Minimum TLAB Size</span>: The minimum TLAB size.</p>
</li>
<li><p><span class="bold">TLAB Refill Waste Limit</span>: </p>
</li>
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